Denatured alcohol



Patented Feb. I6, 1926.

UNITED STATES HENRY C. FULLER, OF WASHINGTON, DISTRICT OF COLUMBIA,ASSIG-NOB TO UNION Y 1,573,698 PATENT OFFICE.

CARBIDE AND CABIBON BESEARCH LABORATORIES. INC., OF LONG ISLAND CITY,NEW YORK, A CORPORATION OF NEW YORK.

DENATURED ALCOHOL.

No Drawing.

cles such as liniments, mouth washes, toilet.

Waters, perfumes, hair tonics, bay rum and manyliquid'medicines such asfluid extracts,

tinctures and other mixed medicines.

In my application Serial Number 47 5,47 8

iled June 6, 1921 I have disclosed the use of lycerine derivatives suchas the chlorhydrins and halogen aliphatic acid derivatives of glycerineas denaturing a ents for ethyl alcohol. I havenow found t at thederivatives of the glyools such as the halogen all phatic acid esters ofthe glycols, the lycol alogen-hydrins and the aliphatic an aromatic acidesters of both glycerine and glycols may be used as denaturing agents.

examples of the classes of compounds which I propose to use asdenaturing agents are glycerol mono-acetate, ethylene glycolmonoacetate, the monochloracetic acid ester of ethylene glycol and thebenzoic acid esters of lycerine and ethylene glycol. The. use of tIxemonochlorhydrin of g1 cerine and the monochloracetic-monoglycen e isreferred to in my copending application referred to above.

These denaturing agents ma be used in widel varying proportions. ageneral rule rom 6 to 12 per cent of the denaturing agent is mixed withthe alcohol, the particular amount used depending upon the price of theparticular denaturing agent emplo ed, the intensit of its denaturingeffect an the use to whic the denatured product is to be put. Since thedenaturing agents are general more ex nsive than alcohol 1t 15 usuallpreferre to use the smallest quantity w ich will produce thedesired-denaturin effect.

IE the various materials mentioned the monochloracetic acid esters ofthe polyhy drio alcohols and particularly the mono- Application filedJune 21, 1922. Serial No. 569.951.

chloraceticmonoglyceride and the monochloracetic acid ester of ethyleneglycol are preferred. It is to be understood however that the inventionis not limited to the use of these specific compounds except as is re-'quired by the appended claims.

example of a denatured alcohol prod uct embraced by my invention is amixture of 90 parts by volume of 95 per cent ethyl alcohol and 10 partsby volume of the monochloracetic acid ester of ethylene glycol.

Heretofore the work of the Bureau of Internal Revenue has been greatlycomplicated and the work of manufacturing ethyl alcohol greatlyinterfered with by the use of a great variety of denaturing agents noneof which are of general a plicatlon. Some of the denaturing agentslieretoforeemployed are suitable foruse in the manufacture of only oneproduct or a limited number of products.

The use of the denaturing a ents of my invention largel overcomes thisdifiiculty. The treated alco 01 is sufficiently denatured to be unfitfor use as a beverage due to its un, leasant taste. Even in considerabledilution, the effect is such that when intro duced into the mouth,the'taker cannot swallow it. On the other hand the odor of thedenaturing agent is comparatively mild and does not unpleasantly afiectthe aromatic substances and volatile oils which enter into thecompositions referred to'above. Moreover the denaturing agents are notviolently oisonous and are not detrimental to alcool preparationsingested or applied to the skin in small amounts.

The dentured alcohol containing the denaturingagents of my invention,besides being nonotable and capable of rather general app 'cationbecause the odor is not offensive and because the physiological properties of the denaturing agents are not detrimental to the alcohol,retains its solvent properties and its capacity for being compoundedinto preparations of the kind above described, and it can be dilutedwith water without precipitation of the denaturing agent.

It is of course understood that mixtures of-two or more of thederivaties of polyhydric alcohols herein described can be used asdenaturing agents without departing from my invention.

' ethyl alcohol and a .In the appended claims the expression organicacid esters is intended to include both the aliphatic and aromatic acidesters and the expression polyhydric alcohols includes 5 alcoholscontaining more than one hydroxyl groug such as the dihydric andtrihydric alcoho 'I claim:

1. Denatured eth 1 alcohol comprising lialogen fatty acid ester of apolyhydric alcohol.

2. Denatured ethyl alcohol comprising ethyl alcohol and a chlor fattyacid ester of a polyhydric alcohol.

3. Denatured ethyl alcohol comprising 15 ethyl alcohol and a chloraceticacid ester of a poljyshydric alcohol.

4. enatured ethyl alcohol comprising ethyl alcohol and a chloraceticacid ester of ethylene glycol.

In testimony whereof, I aflix my si ature.

HENRY C. FUL ER.

